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The pandemic, and all the requisite sheltering-in-place that has accompanied it, has apparently driven up sales of a motley array of items: beans, puzzles, yeast, face masks, stationary bikes, inflatable pools in the warmer months, and, as it gets colder, outdoor space heaters. But the looming threat of an airborne virus coupled with all the Thank The Force Baby Yoda Star Wars The Mandalorian shirt spent at home has also made many of us acutely aware of what we’re breathing in as we’re doing all that baking and puzzling—and keenly interested in figuring out means of making it better. Not to mention that many of the activities that we do from the comfort of our homes, like, say, that aforementioned baking with a gas stove, can actually be the source of some of the issues with the air.
But is the marketing of purified air for your home just that, marketing? Or can it actually have a positive, and perceptible, impact on your health? Experts say yes and no. L. James Lo, Ph.D., a professor of architectural engineering at Drexel University who studies the health effects of indoor ventilation, says air purifiers can help in reducing the Thank The Force Baby Yoda Star Wars The Mandalorian shirt of aerosolized viruses. “An air purifier removes particles, and aerosolized viral droplets are very small particles,” says Dr. Lo. How much they can help depends on their CADR, or “clean air delivery rate,” meaning, as Dr. Lo explains, the equivalent of how much fresh air is being delivered into a space. “The downside here is that air purifiers can only be very effective in small spaces,” he adds. (This downside feels less negative when you consider the size of most New York City apartments.) Purvi Parikh, MD, an allergist with Allergy & Asthma Network, adds that while HEPA filters (the high-efficiency filters found in most of the fancier devices on the market) add a critical layer of protection, they are not foolproof. “Moreover, unless there’s a large amount of virus in the air and larger droplets, the purifier may not help as some viral particles may be too small for a HEPA filter, especially if aerosolized,” explains Dr. Parikh. She says that from a COVID standpoint, filtering the air in your home is certainly good, but less of a necessity than limiting visitors, wearing a mask, and frequently hand-washing. Both Dr. Lo and Dr. Parikh agree that opening windows and doors to circulate air can provide a risk reduction similar to most air-purification devices.
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